Exeter, CA 93221 Frost Dates
When can you plant in Exeter, CA?
The last spring frost here typically falls around 02/05, about 161 days from today. The first fall frost typically arrives around 12/08, about 307 frost-free days later.
Zone 9b (25 to 30°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Exeter, not a forecast for this year.
What to do before the first frost
About 15 weeks of growing season left in Exeter before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
02/05 is the middle of 30 years of NOAA records, not a promise. Plant by 01/01 and you're betting against frost in roughly 9 years out of 10. 03/20 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Exeter compares
Exeter's growing season runs about 307 days, ranking 3,673 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,493 of 2,555.
Learn more
the frost range covers how to read the range around Exeter's dates instead of trusting one. local microclimates covers what one yard in Exeter can differ from the 93221 normal.